Radiator and method of forming the same



June 25, 1929. J. KARMAZIN 1,718,361

RADIATOR AND METHOD OF FORMING THE SAME Filed March 9, 1926 I? W v J'OHNKAR ZIN A TT RNE VS 1N VENTOR Patented June 25, 1929.

UNITED STATES JOHN KARMAZIN, OF DETROIT, MICHIGAN.

RADIATOR AND METHOD OF FORMING THE SAME.

Application filed March 9, 1926. Serial mfsano.

This invention relates to radiators and more especially to the methodand means for connecting the terminals of the water passages of theradiator within the water supply tank or to the outlet from theradiator. The invention is applicable, for example, to radiators of thegeneral type described in my copending application. Serial No. 641,850,filed May 28, 1923, although in its broader aspects not limited to thisparticular type of radiator.-

One of the objects of the invention is to provide a simple, easy methodof securing a tank to the core of a radiator of this type, whereby eachwater conduit will be connected to the tank without danger of closing orstoppage of any of the water conduits.

Another object of the invention is to provide a method of securing atank to the core of a radiator whereby each conduit is connected to thetank without solder, it being necessary to solderonly around the outeredges of the tank and core.

Another object of the invention is to provide a simple method ofsecuring a tank to a radiator core in which each Water con.

duit is considerably strengthened adjacent tot-he tank and the wholestructure thereby rendered more rigid and firm.

Another object of the invention is to provide a radiator in which theupper and lower header sheets are held between the core and extraelements adapted to telescope with the water tubes of the core wherebythe strength of the connection is dependent upon the strength of theextra or core element rather than upon a solder connection.

Other objects of the invention will be apparent as the descriptionproceeds.

One embodiment of the invention has been illustrated in the accompanyingdrawings,.in which Fig. 1 is a side elevation partly in section showingan upper tank wall, the parts in position before pressing together toform the rigid connection; Fig. 2 is a view corresponding to Fig. 1, butwith the parts pressed securely together; Fig. 3 is an elevational Viewpartly in section of the connection between the lower tank and thecore.. 7 p

For purposes of illustration, I have shown in the drawings a radiatorcore 10 comprising a plurality of superposed fins or elements 11 havingintegral tubular projections 12 telescoped together to form waterconduit-s 13from top to bottom of the radiator core.

The upperwater tank or header 14 has a I bottom or header sheet 15 whichis perforated in a plurality of places asat 16 to register with thewater conduits 13 in the core.

An element 17 preferably identical with duits 13 of the core. Theelement 17 is thenplaced over the bottom or header sheet 15 so that theprojections 18 protrude through the holes 16 in the header 15 and enterthe water conduits 13in the core. The element 17 is then pressed firmlydown as far as possible, forcing the projections 18 into the conduits13, where they are held by friction securing the header sheet 15 firmlybetween the strip 17 and the uppermost element 11 of the core 10. Awater. tight connection is formed thereby between the telescopingproections 18 and the water conduits 13 so that the conduits 13 are, soto speak, extended up throughthe strip 17 and the holes 16 in the headersheet are closed and frictionally sealed by projections 18 passingtherethrough. If care is taken to provide the holes 16 of the properdiameter to fit snugly about the projections 18, the connection betweenthe core and the tank may be made water tight without soldering, but toguard against the possibility of evenness in the projections 18 or sizeof the holes 16, solder may be applied to the outer edges of the headersheet 15 and the upper core element 11, as indicated at 19.

The lower'tank 20 is secured to the core 10 m a similar manner as to theupper tank. The header sheet 21 is provided with holes 22 adapted toregister with the water conduits 13 and receive the ends of theproections 12 on the lowermost element 11. The strip or extra element 23has projections 24 thereon adapted to telescope with the projections 12of the lowermost element 11 and is adapted to fit inside the tank 20.

The core 10 is set upon the bottom tank 20 with the pro'e'ctions 12 ofthe lowermost element protru ing through the holes 22.

a leak due to un- The strip 23 is then pressed up against the headersheet 21 as. far as possible so that the projections 24 telescope withand frictionally engage the projections 12 of the lowermost element ofthe core. tight connection is thereby made between the projections 12 ofthe lowermosttstrip and the projections 24 of the strip 23, and theholes 22 are sealed by the projections 12 of the lowermostelement of thecore. This provides a' liquidtight connection between the tank and thecore but'as in the case of the upper tank solder is applied around theedge of the lowermost element 11 of the core and the header sheet 21 asat to remove all possibility of leakage.

The projections24 on the strip 23 may be shorter than the projections 12on the ele- .ments' 11 so as not to extend too far down radiator havingwater conduits therein to a into the tank 20, or, if desired, certain ofthe,conduits, as 26, may be cut oil just below the strip 23 to rovide'an outlet for any steam which mig t collect in the lower tank beneaththe strip 23, as described in my issued Patent, No. 1,527,736, grantedFebruary 24, 1925.

With this construction, not only is a liquid tight connection provided,but at the same time the ends of the water conduits and the headerconnections are greatly strengthened as the extra thickness of theprojections of the strips 17 and 23 is added'to that of the waterconduits, making substantially double walled projections just below andabove the upper and lower headers, as shown for example in the sectionalportions of Figs. 2 an 3. The ends of the water conduits merelyfrictionally engage the tubular projections on the stri s, no solderbeing used, and hence danger o clogging or closing any of the conduitsis eliminated. Y

It will be understood that although I have illustrated one type ofradiator core the invention in its broader aspects may be used with anyradiator core having a plurality of straight parallel inlets or outletsat anend thereof, and I do not therefore desire to limit my invention tothe particular embodiment shown in the drawings but to interpret theinvention broadly within the scope ofthe appended claims. I claim:

1. The method of attaching a water tank to a radiator core having waterconduits therein which comprises providing a member having a pluralityof tubular projections thereon adapted to register with the waterconduits of said radiator core, providing a tank having a wall withopenings therein adapted to register with the water conduits of saidcore, pressing said member against said core with the wall of said tanktherebetween whereby said tubular projections frictionally engage withthe water conduits of said core and hold said tank and said core Aliquidtogether and soldering the outside edges of said core and saidtank. o

-2. The'methodof attaching a water tank to a radiator core having waterconduits therein which comprises, providing a strip of metal adapted tofit inside said tank and having a plurality of tubular projectionsthereon adapted to simultaneously register with the Water conduits insaid core, providing the wall of said tank adjacent said core with aplurality of openings adapted to register with the Water conduits insaid core, pressing said strip toward said core with the wall of saidtank therebetween, whereby said tubular projections friction-ally engagewith said water conduits to hold said tank and said core together andsoldering together the outer edges of said tank and said core.

3. The method of attaching the core of a water tank which comprisesproviding a strip of metal adapted to fit inside of the water tank andhaving integral tubular projections thereon adapted to register with thewater conduits of said radiator core, providing one Wall of said tankwith perforations adapted to register with said water conduits in saidcore, pressing said strip against said core with said perforated wall 4therebetween whereby said tubular projections are forced into said waterconduits to frictionally engage said conduits, whereby said tank is heldfirmly against said core,and soldering said core and tank togetheraround the edges thereof.

4. The method of attaching a radiator core with water conduits thereinto a water tank which comprises providinga strip of metal adaptedto fitinside said tank, and having a plurality of integral tubular projectionsthereon adapted to register with the water conduits of said core,providing one wall of said tank with perforations adapted .to registerwith the water conduits in said core, pressing said strip a ainst saidcore with said perforated wall t erebetweemwhereby said tubularprojections are simultaneously telescoped with the ends of said watercon-- duits and 'said core is'held rigidly against said tank andsoldering together the edges of said core andsaid tank. a

5. The method of attaching a tank to the core of a radiator with waterconduits therein a plurality of superposed fins having tu-- bularprojections thereon, said projections I ally engage the tubularfprojections on said holes -i;n the extra fin and hold said n againstthe wall of said tank and. said tank against said core, and solderingtogether the outer ed es of said tank and the adjacent fins of saidcore.

6. The method of securing a tank to the core of a radiator which comrises provid-' ing a member having'a plurality of integral tubularprojections thereon adapted to telescope with the water conduits of saidcore, providing one wall of said tank with holes adapted to register.with the water Conduits of said core, and pressing said member againstsaid core with said wall therebetween whereby said wall is firmlysecured to said core.

7. The method of attaching a header to the core of an integral fin andtube type radiator, which comprises mounting a perforated wall of theheader between two of the fin elements and movin said elements intocontact with each side 0 said wall, with the projections of one elementextending through said perforations and into the projections of theother element.

8. The method of securing upper and lower water tanks to the core of aradiator having'water conduits therein which comprises the steps ofproviding a plurality of bottom of said upper tank, adapted to registerwith the water conduits in said core, providing a plurality of holes inthe top 0 said lower tank adapted to register wlth said water conduits,roviding a pairof strips having a plurallty of tubular projectionsthereon adapted to register with the saidwater conduits and'to fit onein each of said tanks, placing one of said strips in said uppertank'with said projections projecting downwardly through said holes,placing said tank and element upon said core with said projectionsinserted in said water ,conduits, placing the other of said strips insaid lower tank with said projections registering with said holes,placing said core upon saidlower tank with said water conduits:protruding through said holes and into the tubular rojections on saidstrip, pressing said strips firmly toward said core whereby said upperand lower tanks are held firmly against said core with the adjacentwalls of said tanks held between said strips and said core and solderingsaid core and tanks together around the outer edges thereof. 7

ing of a plurality o 9. A radiator'comprisinga core having a pluralityof water conduits passing there through, an upper water tank having aplurality of holes in the bottom thereof adapted to register with saidwater conduits, a striphaving tubular projections thereon projectingthrough the holes in the bottom of said tank and frictionally engagingwith said water conduits, a lower water tank having a plurality of'holes in the top thereof adapted to register with said water conduitsand through which the ends of said Water conduits project, a striphaving -tuconduits, a'lower tank having a plurality of holes in the topthereof adapted to register with said water conduits, a strip in each ofsaid tanks having a plurality of tubular projections thereon adapted toregl ster with and frictionally engage said water conduits whereby eachof said conduits is connected to said upper and lower tanks and saidtanks are firmly attached to said core.

11. A radiator com rising a core ,consistfin elements having integraltubular projections extending therefrom with the projections of oneelement extending into the projections of the adjacent element to formwater conduits through the core, and header tanks having one wallthereof mounted between the two fin elements at each end of the core.

12. In a radiator, a core constructed to permit water flow therein, aplurality of terminal water passa es at its end, a header membercovering sai core end and provided with holes registeringwith the endsof said passages, and a plate on the opposite side of said header memberhaving tubular pro-" jections registering with said terminal passa s andsaid plate member perforations, said tubular projections being integrallconnected, and said connecting ortions ad ditionally reinforcing saidhea er member. In testimon whereof I have afiixed my signature to t isspecification.

JOHN KARMAZIN.

